[Facebook files smartphone patent featuring a couple versions of a device with a touch pad on the side or the rear for use with a "gesture recognition library."]

By Nick Bito (NYT) -- "According to the filing with the United States Patent and Trademark Office, the Facebook patent application was originally made by Matthew Papakipos, a lead engineer at Facebook, and Matthew Cahill, who has since left Facebook to work at Quip. (That company was founded by Bret Taylor, Facebook’s former chief technology officer who also worked on the Facebook smartphone.)"